<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头部区域 -->
      <div class="avatar_box">
        <img
          src="../assets/img/fffecd8eb8d6a8c1af607484a30e89bb_1.jpg"
          alt=""
        />
      </div>

      <!-- 登录表单区域 -->
      <el-form
        ref="loginFormRef111"
        :model="loginForm"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
            type="password"
          ></el-input>
        </el-form-item>

        <!-- 按键区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLogiinFrom">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      loginFormRules: {
        // 验证用户名
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 6, message: '长度在3-6个字符', trigger: 'blur' },
        ],
        // 验证密码
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 12, message: '长度在6-12个字符', trigger: 'blur' },
        ],
      },
    }
  },
  methods: {
    // 点击重置按钮
    resetLogiinFrom() {
      // resetFields重置
      this.$refs.loginFormRef111.resetFields()
    },
    login() {
      //valid判断是否满足条件
      this.$refs.loginFormRef111.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        // console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败')

        // 登录成功之后
        this.$message.success('登陆成功')
        // 1.将登录成功之后的token 保存到客户端的 sessionStorage中
        // 1.1项目中出了登录之外的其他API接口 必须在登录之后才能访问
        // 1.2token只应在网站打开期间生效 所以token保存在sessionStorage中
        // console.log(res)
        window.sessionStorage.setItem('token',res.data.token)
        // 2.通过编程式导航跳转到后台主页 路由地址是/home
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style scoped>
.login_container {
  background-color: #7ed6df;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 10px #ddd;
}

.avatar_box {
  height: 130px;
  width: 130px;
  background-color: #fff;
  border: 2px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
}

.avatar_box img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #eee;
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>